Proposal for Benchmark Model of Laminated Iron Core and the Large-scale and Highly Accurate Magnetic Field Analysis

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  • 積層鉄芯ベンチマークモデルの提案とその高精度磁界解析
  • セキソウ テッシン ベンチマーク モデル ノ テイアン ト ソノ コウセイド ジカイ カイセキ

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Abstract

This paper describes a benchmark model proposed for the clarification of the characteristic of various methods for modeling the laminated iron core. In order to obtain a reference solution of the benchmark model, a large-scale nonlinear magnetostatic field analysis with a fine mesh enough to represent the microscopic structure of the laminated iron core is carried out by using the hybrid finite element-boundary element (FE-BE) method combined with the fast multipole method (FMM) based on diagonal forms for translation operators. The computational costs and accuracy of two kinds of the homogenization methods are discussed comparing the reference solution. As a consequence, it is verified that the homogenization methods can analyze magnetic fields in laminated iron core within acceptable computational costs.

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